Home / 3,878.68-5,350.66-2,619.80

Finding the Fourth Proportional to 3,878.68, 5,350.66 and 2,619.80

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Solution

The fourth proportional to 3,878.68, 5,350.66 and 2,619.80 is: 3,614.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.68 : 5,350.66 = 2,619.80 : x
  2. Step 2: Convert to fraction form
    3,878.68/5,350.66 = 2,619.80/x
  3. Step 3: Cross multiply
    3,878.68x = 5,350.66 × 2,619.80
  4. Step 4: Simplify right side
    3,878.68x = 14,017,659.07
  5. Step 5: Solve for x
    x = 14,017,659.07/3,878.68
  6. Step 6: Final answer
    x = 3,614.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.